He patted the gun again. “That’s why Harper, or whatever Harper was, wanted to get the jug. He and his race didn’t feel safe so long as there was any race in the Universe holding a working knowledge of the fourth dimension.”
“Harper,” said Elmer, “had a fourth-dimensional sense.”
Lathrop nodded. “The Martians didn’t have such a sense, couldn’t feel in the fourth dimension. So they never knew it when they poured themselves into the fourth dimension. But when Harper started being shoved into the fourth dimension, it hurt. It hurt like hell. It killed him.”
Carter shrugged. “It’s not much to go on.”
“The human race,” Lathrop reminded him, “has gone a long way on less. The gun is the starting point. From it we learn the basic principle. Pretty soon we’ll be able to make Buster his regular size again. And after that we’ll be able to do something else. And then we’ll find another fact. We’ll edge up on it. In the end we’ll know more about the fourth dimension than the Martians did. And we’ll have a weapon none of the Evil Beings dare to face.”
“We’ll do all that,” said Carter, “if Elmer lets us go. He still can insist that we stay right here and starve.”
“You may go,” said Elmer.
They stood, the three of them, staring at the ceiling, where Elmer fluttered wispily.
“You may go,” Elmer said again, and there was a bit of insistence in his voice as if he wished they would. “You will find a switch in the hiding place back of where the jug stood. It controls the screen.”
They waited in silence while Carter snapped the switch.
“Good night,” said Elmer and in his thoughts was a weight of sorrow, a sorrow that seemed to be wrenched out of a millennia of life.
They turned to go, but before they reached he door he called them back.
“Perhaps you would take Buster. Take care of him until you can restore him to normal size again.”
“Certainly,” said Lathrop.
“And, gentlemen,” said Elmer, “just one other thing.”
“Yes, what is it, Elmer?”
“There’ll be times,” said Elmer, “when you won’t understand. Times when you get stuck.”
“I don’t doubt it,” Carter admitted.
“When those times come,” said Elmer, come around and see me. Maybe I can help.”
“Thank you, Elmer,” said Lathrop. Then he went into the other room for Buster.
An A\NN/A Preservation Edition.
Scanned with preliminary proofing by A\NN/A
June 19th, 2008—v1.0—11,072 words.
From the original source: Astounding, March 1943
This story has never been reprinted in a mass-market edition.